Effect of genomic variables on HR distribution. (A) Proportion (%) of genome recombined based on competence capabilities (Com+/Com−). (B) HR event fragment size distribution based on competence capabilities: competent (Com+) (solid color, right paired boxes) and noncompetent (Com−) (grayed out color, left paired boxes). (C and D) Genomic island (GI) distributions (%), com gene content (C), and type I restriction modification system (RM-I) gene content distribution (D) based on the different lifestyles considered. Four lifestyles are represented with the following color code: black, endosymbionts and intracellular pathogens; blue, opportunistic pathogens; red, commensal and free-living pathogens; green, obligate pathogens (green).